Improvement in clay-mills



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JAMES A. VAUGHN AND HORACE B. CAMP, OF CUYAHOGA FALLS, HENRY F. MERRILL,OF4 AKRON, OHIO, AND CALVIN J. MERRILL, OF ALTON, ILL., ASSIGNORS TOTURNER, PARKS & CO., OF CUYAHOGA FALLS, OHIO.

IMPROVEMENT IN CLAY-MILLS.

Specification forming part of Letters Patent No. 145,373, dated December9, 1873; application tiled May 3, 1873.

To all whom it may concern:

Befit known that we, JAMES A. VAUGHN and HORACE B. CAMP, of CuyahogaFalls, in the county of Summit'and State of Ohio, HENRY E. MERRILL, ofAkron, in said county and State, and CAL-VIN J. MERRILL, of Alton, inthe county of Madison and State of Illinois, have invented certainImprovements in Clay- Mills, of which the following is a specification:

This invention relates to that class of mills for grinding clay whereinthe clay is ground by two wheels revolving in a circular trough or bed;and the invention consists of a main or driving shaft and an auxiliaryshaft geared with an endless rack for reciprocating the same, the mainshaft and auxiliary shaft being so geared together that thegrinding-wheels shall be reciprocated by' the action of the rack andauxiliary shaft, in the manner hereinafter C. The shaft A is forked nearits lower end to form two arms, a a, descending upon a base or disk, b,thus produein g an opening, as shown, beneath which the shaft is of theusual form. The grinding portion of the mill is composed of two wheels,D D, which revolve on ahorizontal shaft, E, which passes through anopening in the shaft A.l Between the two wheels is located a rectangularframe, F, and said frame and wheels have a longitudinal motion on theshaft E, as hereinafter described. An endless rack, G, possessing anarm, a', is arranged in the opening created by the branching arms a a ofthe shaft A, and its arm a is secured to the frame F by a pin passingthrough the opening c in the end ofsaid arm. An auxiliary shaft, H,passing through the shaft A, has near its lower end a pinion, I, whichgears with the rack G, and its lower end bears in a continuous groove,d, formed in the base portion of the rack, thus retaining' said pinionconstantly in gear with the rack. The main shaft is revolved by means ofa belt passing around the pulley c, and by means of the shaft E causesthe wheels D to travel around the bed J, and at the same time motionwill be communicated to the shaft H'by means of the pinion f on theupper end of the shaft A, which meshes with a gear-wheel, g, located ona vert-ical shaft, h, having on its `upper end a pinion, t', meshingwith a gearwheel on the upper end of the auxiliary shaft H, thusimparting a revolving motion to the latter, and by means ofthe pinion lcausing the endless rack Gr to have a reciprocating motion, imparting acorresponding motion to the frame F, which has the effect of moving thewheels longitudinally on the shaft E, and causes them to traverse everyportion of the bed J, thus eifectually accomplishing the grindingprocess. Instead of making the shaft A hollow and arranging theauxiliary within it, we in some instances make said shaft solid, andarrange on it a collar, l, possessing an arm which serves as a bearingfor the auxiliary shaft H, the lower end of which c.rries the pinion I,and its upper end carries a gearwheel, m, meshing into a pinion, n,loosely arranged on the drivin g-shaft A, and prevented from turning bya rod, O, by which means, as the shaft A revolves, a slow motion will becommunicated to the shaft H, and also to the endless rack andgrinding-Wheels, as shown in Figs'. 5 and 6; or, instead of this mannerof operating the auxiliarT shaft and endless rack, We in some instancesmake the shaft A hollow above the collar l, and arrange shaft K Withinit, said shaft having at its lower end a pinion, n, meshing with thegear-wheel m on the auxiliary shaft H, as shown in Figs. 7 and 8. Inthis instance motion is communicated to the shaft K by the meansdescribed in Fig. 1.

We claiin as our invention- In combination with the main shaft A andendless rack Gr, the auxiliary shaft H for reciprocating the rack, themain and auxiliary shafts being so geared together that thegrinding-Wheels shall be reciprocated, in the 1nan ner herein described.

JAMES A. VAUGHN. HORACE B. CAMP.

HENRY E. MERRILL. CALVIN J. MERRILL.

Witnesses to signatures of VAUGHN and CAMP GEO. L. DOW, GEo. C. GERMAIN.

Vitnesses to signature of I-I. E. MERRILL HENRY PURDY, E. N. BANGs.

\Vitnesses to signature of C. J. MERRILL:

C. NV. LEVERETT, I. B. RANDLE, Jr.

